Have you ever wished that there was a Talk in Secret Code Day or a Sleep in until Noon Day? Wish no more because March 26 is Make Up Your Own Holiday Day!

If you’re feeling extra enthusiastic about your holiday, why not try to make it official? After all, it was Sarah Josepha Hale’s 17-year letter-writing campaign that convinced President Abraham Lincoln to declare Thanksgiving a national holiday. (Read Hale’s final, successful attempt to convince President Lincoln here.)